//
// Created by deepin on 2020/11/10.
//
#include <iostream>
using namespace std;
template <typename T> void Swap(T &a ,T &b);
/*int main ()
{
  int i =10,j=20;
  cout << "i,j = "<< i<<"," << j << endl;
  Swap(i,j);
  cout << "i,j = "<< i<<"," << j << endl;
  double x = 24.5,y=78.5;
  cout << "x,y = "<< x <<"," << y << endl;
  Swap(x,y);
  cout << "x,y = "<< x <<"," << y << endl;
  return 0;
}*/
template<typename T> void Swap(T &a, T &b)
{
  T temp;
  temp = a;
  a=b;
  b=temp;
}